Focal (segmental) acute ischemia of large intestine

This code signifies a localized, acute reduction in blood flow to a segment of the large intestine that is potentially reversible. It indicates a temporary lack of oxygen and nutrients to a specific portion of the colon, which, if addressed promptly, may not lead to permanent tissue damage.

Use this code for patients presenting with sudden onset abdominal pain, bloody diarrhea, or other symptoms suggestive of acute colonic ischemia, where diagnostic imaging (e.g., CT angiography, colonoscopy) confirms a focal, non-gangrenous ischemic event. Documentation should clearly state "acute," "reversible," and "focal" or "segmental" involvement of the large intestine.

• Differentiate from chronic or diffuse ischemia; this code is specific to acute and localized events.
• Ensure documentation explicitly states "reversible" or implies non-gangrenous changes to support this code.
• Avoid using this code if necrosis or gangrene of the intestine is present, as more severe codes would be appropriate.